Bob,
Typically, the battery is used to get to the proper CG range when the plane
is finished in construction. Don has the good suggestion of getting a
general idea of CG and battery location utilizing an early weigh-in. There
can be significant difference in battery location per plane depending on the
builder. As an example, my early airframe has the battery behind the
passenger seat. A friend's early airframe has his battery just
behind the baggage bulkhead. Another friend with the same airframe
has his battery farther behind the baggage bulkhead.
Gary Edwards
LNC2
With serial number 325, the
factory should be able to define your airframe type. It seems to make a
difference between a 235/320 engine and a 320/ with a 320 engine. My 235/320 had
a forward CG problem with me and a minimum fuel aboard. It was similar to your
equipment list, plus an oleo nose gear for additional forward CG
moment. Other contributors had rear CG problems with the 320/320
configuration. Suggest you do a rough weighing based on what
you have, with the basics installed, it should point toward best
location for your battery.. My best location was aft of the baggage
compartment with a RC Battery.
...Best
guess as to best battery location?
Bob
Mitchell